CN104775086A - Ceramic coating for metal-based thermal spraying and spraying method thereof - Google Patents
Ceramic coating for metal-based thermal spraying and spraying method thereof Download PDFInfo
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- CN104775086A CN104775086A CN201510212739.3A CN201510212739A CN104775086A CN 104775086 A CN104775086 A CN 104775086A CN 201510212739 A CN201510212739 A CN 201510212739A CN 104775086 A CN104775086 A CN 104775086A
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Abstract
The invention provides a ceramic coating for metal-based thermal spraying and a spraying method thereof. The ceramic coating comprises, by weight, raw materials including 15-22 parts of flint clay, 13-20 parts of kaolin, 3-8 parts of quartz, 3-5 parts of titanium oxide, 2-5 parts of sodium oxide, 1-3 parts of zinc oxide, 2-3 parts of zirconia-based aluminosilicate, 15-18 parts of feldspars, 2-4 parts of iron powder, 5-7 parts of auxiliaries, 1.5-2.5 parts of nickel sulfate, 1-2 parts of rare earth, 1-2 parts of zirconite and 4-8 parts of deionized water. The ceramic powder of the ceramic coating is appropriate in ingredient and proportion, the average grain size of the ceramic coating is 52.8 nm, a molten housing is of a columnar crystal structure having good directivity, and the ceramic coating has good temperature endurance, ablation resistance and mechanical property and high strength.
Description
Technical field
The present invention relates to a kind of pottery and spraying method thereof of thermospray, a kind of ceramic coating for metal matrix thermospray and spraying method thereof, belong to technical field of hot specifically.
Background technology
Along with the development of society, pottery occupies an important position in a lot of field, and be subject to the accreditation of a lot of human consumer, the environment for use of pottery is very complicated, especially under there is the environment of high temperature, greatly reduce work-ing life, increase cost, so traditional stupalith cannot meet day by day harsh job requirement, the important topic that exploitation has high temperature resistant, corrosion-resistant, shock resistance, anti-tired and anti abrasive advanced composite material has become Materials science research.The method wherein carrying out coated ceramic layer in metallic surface by the form of thermospray prepare the toughness not only with metal and intensity, but also the matrix material of the advantage such as high temperature resistant, corrosion-resistant with pottery become an important research direction.
Summary of the invention
Technical problem to be solved by this invention is, a kind of ceramic coating for metal matrix thermospray and heat spraying method thereof are proposed, ceramic coating surface thickness >=the 2mm of preparation, density >=96%, overcomes the shortcoming can not preparing the ceramic coating of thickness >=2mm in traditional hot-spraying techniques at material surfaces such as structure units.
The present invention solves the technical scheme of above technical problem: provide a kind of ceramic coating for metal matrix thermospray, the composition of its raw material comprises by weight: flint clay: 15-22 part, kaolin: 13-20 part, quartz: 3-8 part, titanium oxide: 3-5 part, sodium oxide: 2-5 part, zinc oxide: 1-3 part, Zirconia aluminosilicate: 2-3 part, feldspar: 15-18 part, iron powder: 2-4 part, auxiliary agent: 5-7 part, single nickel salt: 1.5-2.5, rare earth: 1-2 part, zircon: 1-2 part, deionized water: 4-8 part;
The component of described rare earth is by mass percentage: erbium: 8.5-8.8%, lutetium: 3.4-3.6%, neodymium: 9.1-9.8%, promethium: 2.7-3.5%, samarium: 11.2-12.5%, dysprosium: 11.2-11.5%, and surplus is lanthanum and inevitable impurity;
The component of described auxiliary agent is counted by weight: aluminium sesquioxide: 18-27 part, hyaluronic acid sodium: 11-16 part, titanium dioxide: 5-7 part, silicon sol: 2-4 part, carboxymethyl cellulose: 4-9 part.
Further restriction technical scheme of the present invention, the aforesaid ceramic coating for metal matrix thermospray, the composition of its raw material comprises by weight: flint clay: 15 parts, kaolin: 13 parts, quartz: 3 parts, titanium oxide: 3 parts, sodium oxide: 2 parts, zinc oxide: 1 part, Zirconia aluminosilicate: 2 parts, feldspar: 15 parts, iron powder: 2 parts, auxiliary agent: 5 parts,, single nickel salt: 1.5, rare earth: 1 part, zircon: 1 part, deionized water: 4 parts;
The component of described rare earth is by mass percentage: erbium: 8.5%, lutetium: 3.4%, neodymium: 9.1%, promethium: 2.7%, samarium: 11.2%, dysprosium: 11.2%, and surplus is lanthanum and inevitable impurity;
The component of described auxiliary agent is counted by weight: aluminium sesquioxide: 18 parts, hyaluronic acid sodium: 11 parts, titanium dioxide: 5 parts, silicon sol: 2 parts, carboxymethyl cellulose: 4 parts.
The aforesaid ceramic coating for metal matrix thermospray, the composition of its raw material comprises by weight: flint clay: 18 parts, kaolin: 16 parts, quartz: 5 parts, titanium oxide: 4 parts, sodium oxide: 3 parts, zinc oxide: 2 parts, Zirconia aluminosilicate: 3 parts, feldspar: 17 parts, iron powder: 3 parts, auxiliary agent: 6 parts, single nickel salt: 2, rare earth: 1 part, zircon: 2 parts, deionized water: 6 parts;
The component of described rare earth is by mass percentage: erbium: 8.6%, lutetium: 3.5%, neodymium: 9.4%, promethium: 3.2%, samarium: 11.8%, dysprosium: 11.3%, and surplus is lanthanum and inevitable impurity;
The component of described auxiliary agent is counted by weight: aluminium sesquioxide: 24 parts, hyaluronic acid sodium: 13 parts, titanium dioxide: 6 parts, silicon sol: 3 parts, carboxymethyl cellulose: 7 parts.
The aforesaid ceramic coating for metal matrix thermospray, the composition of its raw material comprises by weight: flint clay: 22 parts, kaolin: 20 parts, quartz: 8 parts, titanium oxide: 5 parts, sodium oxide: 5 parts, zinc oxide: 3 parts, Zirconia aluminosilicate: 3 parts, feldspar: 18 parts, iron powder: 4 parts, auxiliary agent: 7 parts, single nickel salt: 2.5, rare earth: 2 parts, zircon: 2 parts, deionized water: 8 parts;
The component of described rare earth is by mass percentage: erbium: 8.8%, lutetium: 3.6%, neodymium: 9.8%, promethium: 3.5%, samarium: 12.5%, dysprosium: 11.5%, and surplus is lanthanum and inevitable impurity;
The component of described auxiliary agent is counted by weight: aluminium sesquioxide: 27 parts, hyaluronic acid sodium: 16 parts, titanium dioxide: 7 parts, silicon sol: 4 parts, carboxymethyl cellulose: 9 parts.
For a spraying method for the ceramic coating of metal matrix thermospray, comprise the following steps:
Step (1): take each raw material, adopts any one method of spray-drying process, sintering crushing method or mechanical attrition method to carry out fragmentation, makes spraying ceramic powder;
Step (2): carry out surface cleaning to metal base to be sprayed, removes greasy dirt and the rusty scale of metallic substrate surface by method that is chemical or physics;
Step (3): carry out blasted rough process to metal base to be sprayed, then utilizes dry high-pressure air to purge clean process to the substrate surface after sandblasting;
Step (4): metal base is put into preheating oven and carry out warm-up operation, preheating temperature is 90-115 DEG C, warm up time 20-45min; Metallic substrate surface after preheat sprays rapidly the bond coating that a layer thickness is 0.08-0.35mm, makes it be formed and forms rough coatings with metallic substrate surface;
Step (5): drying of ceramic powder step (1) obtained is sent in the powder feeder of thermal spray system, and wherein powder feeder powder feeding gas is argon gas, and gas flow is 45-70L/min;
Step (6): plasma spray coating process parameter is set, regulate the angle of spray nozzle, the angle of spray stream shaft angle degree and substrate surface is made to keep 60 °-90 °, then the spray distance arranging manipulator control nozzle and metal base is 8-20cm, the translational speed of nozzle is 0.01-0.03m/s, start thermal spray system and mechanical manipulator, cover in metallic substrate surface spraying and once obtain ceramic coating afterwards;
Step (7): fill hole sealing agent at surface ceramii layer.
The spraying method of the aforesaid ceramic coating for metal matrix thermospray, described plasma spray coating process parameter in step (5) is: the airshed of argon gas is 90-130L/min, the airshed of nitrogen is 5-30L/min, and working current is 350-450A, and operating voltage is 120-150V.
Further, the spraying method of the aforesaid ceramic coating for metal matrix thermospray, described bond coating is Mo, NiAl, NiCr or xantal one wherein.
Beneficial effect of the present invention: the present invention in ceramic powder composition and ratio suitable, the average grain size of ceramic coating is 52.8nm, the shell of melting is the very strong columnar crystal structure of directivity, and have wider temperature tolerance, ablation resistance is good and has good mechanical property, intensity is large; The plasma spraying equipment current stabilization adopted, the smooth densification of the aluminum oxide coating layer formed, good with metal base bonding strength, hardness is HRC65-80, shows good functional performance, significantly improves service precision and the life-span of parts.。
Embodiment
embodiment 1
The present embodiment is the ceramic coating for metal matrix thermospray, and the composition of its raw material comprises by weight: flint clay: 15 parts, kaolin: 13 parts, quartz: 3 parts, titanium oxide: 3 parts, sodium oxide: 2 parts, zinc oxide: 1 part, Zirconia aluminosilicate: 2 parts, feldspar: 15 parts, iron powder: 2 parts, auxiliary agent: 5 parts, single nickel salt: 1.5, rare earth: 1 part, zircon: 1 part, deionized water: 4 parts; The component of described rare earth is by mass percentage: erbium: 8.5%, lutetium: 3.4%, neodymium: 9.1%, promethium: 2.7%, samarium: 11.2%, dysprosium: 11.2%, and surplus is lanthanum and inevitable impurity; The component of described auxiliary agent is counted by weight: aluminium sesquioxide: 18 parts, hyaluronic acid sodium: 11 parts, titanium dioxide: 5 parts, silicon sol: 2 parts, carboxymethyl cellulose: 4 parts.
The spraying method of a kind of ceramic coating for metal matrix thermospray that the present embodiment provides, comprises the following steps:
Step (1): take each raw material, adopts any one method of spray-drying process, sintering crushing method or mechanical attrition method to carry out fragmentation, makes spraying ceramic powder;
Step (2): carry out surface cleaning to metal base to be sprayed, removes greasy dirt and the rusty scale of metallic substrate surface by method that is chemical or physics;
Step (3): carry out blasted rough process to metal base to be sprayed, then utilizes dry high-pressure air to purge clean process to the substrate surface after sandblasting;
Step (4): metal base is put into preheating oven and carry out warm-up operation, preheating temperature is 105 DEG C, warm up time 20min; Metallic substrate surface after preheat sprays rapidly the bond coating containing Mo that a layer thickness is 0.08mm, makes it be formed and forms rough coatings with metallic substrate surface;
Step (5): drying of ceramic powder step (1) obtained is sent in the powder feeder of thermal spray system, and wherein powder feeder powder feeding gas is argon gas, and gas flow is 45L/min;
Step (6): plasma spray coating process parameter is set, processing parameter is: the airshed of argon gas is 90L/min, and the airshed of nitrogen is 29L/min, and working current is 350A, and operating voltage is 150V; Regulate the angle of spray nozzle, the angle of spray stream shaft angle degree and substrate surface is made to keep 60 °, then the spray distance arranging manipulator control nozzle and metal base is 8cm, the translational speed of nozzle is 0.01m/s, start thermal spray system and mechanical manipulator, cover in metallic substrate surface spraying and once obtain ceramic coating afterwards;
Step (7): fill hole sealing agent at surface ceramii layer.
embodiment 2
The present embodiment provides a kind of ceramic coating for metal matrix thermospray, and the composition of its raw material comprises by weight: flint clay: 18 parts, kaolin: 16 parts, quartz: 5 parts, titanium oxide: 4 parts, sodium oxide: 3 parts, zinc oxide: 2 parts, Zirconia aluminosilicate: 3 parts, feldspar: 17 parts, iron powder: 3 parts, auxiliary agent: 6 parts, single nickel salt: 2, rare earth: 1 part, zircon: 2 parts, deionized water: 6 parts; The component of described rare earth is by mass percentage: erbium: 8.6%, lutetium: 3.5%, neodymium: 9.4%, promethium: 3.2%, samarium: 11.8%, dysprosium: 11.3%, and surplus is lanthanum and inevitable impurity; The component of described auxiliary agent is counted by weight: aluminium sesquioxide: 24 parts, hyaluronic acid sodium: 13 parts, titanium dioxide: 6 parts, silicon sol: 3 parts, carboxymethyl cellulose: 7 parts.
The spraying method of a kind of ceramic coating for metal matrix thermospray that the present embodiment provides, comprises the following steps:
Step (1): take each raw material, adopts any one method of spray-drying process, sintering crushing method or mechanical attrition method to carry out fragmentation, makes spraying ceramic powder;
Step (2): carry out surface cleaning to metal base to be sprayed, removes greasy dirt and the rusty scale of metallic substrate surface by method that is chemical or physics;
Step (3): carry out blasted rough process to metal base to be sprayed, then utilizes dry high-pressure air to purge clean process to the substrate surface after sandblasting;
Step (4): metal base is put into preheating oven and carry out warm-up operation, preheating temperature is 90 DEG C, warm up time 25min; Metallic substrate surface after preheat sprays rapidly the bond coating containing NiAl that a layer thickness is 0.25mm, makes it be formed and forms rough coatings with metallic substrate surface;
Step (5): drying of ceramic powder step (1) obtained is sent in the powder feeder of thermal spray system, and wherein powder feeder powder feeding gas is argon gas, and gas flow is 60L/min;
Step (6): plasma spray coating process parameter is set, processing parameter is: the airshed of argon gas is 100L/min, and the airshed of nitrogen is 19L/min, and working current is 350-450A, and operating voltage is 130V; Regulate the angle of spray nozzle, the angle of spray stream shaft angle degree and substrate surface is made to keep 70 °, then the spray distance arranging manipulator control nozzle and metal base is 15cm, the translational speed of nozzle is 0.02m/s, start thermal spray system and mechanical manipulator, cover in metallic substrate surface spraying and once obtain ceramic coating afterwards;
Step (7): fill hole sealing agent at surface ceramii layer.
embodiment 3
The present embodiment provides a kind of ceramic coating for metal matrix thermospray, and the composition of its raw material comprises by weight: flint clay: 22 parts, kaolin: 20 parts, quartz: 8 parts, titanium oxide: 5 parts, sodium oxide: 5 parts, zinc oxide: 3 parts, Zirconia aluminosilicate: 3 parts, feldspar: 18 parts, iron powder: 4 parts, auxiliary agent: 7 parts, single nickel salt: 2.5, rare earth: 2 parts, zircon: 2 parts, deionized water: 8 parts; The component of described rare earth is by mass percentage: erbium: 8.8%, lutetium: 3.6%, neodymium: 9.8%, promethium: 3.5%, samarium: 12.5%, dysprosium: 11.5%, and surplus is lanthanum and inevitable impurity; The component of described auxiliary agent is counted by weight: aluminium sesquioxide: 27 parts, hyaluronic acid sodium: 16 parts, titanium dioxide: 7 parts, silicon sol: 4 parts, carboxymethyl cellulose: 9 parts.
The spraying method of a kind of ceramic coating for metal matrix thermospray that the present embodiment provides, comprises the following steps:
Step (1): take each raw material, adopts any one method of spray-drying process, sintering crushing method or mechanical attrition method to carry out fragmentation, makes spraying ceramic powder;
Step (2): carry out surface cleaning to metal base to be sprayed, removes greasy dirt and the rusty scale of metallic substrate surface by method that is chemical or physics;
Step (3): carry out blasted rough process to metal base to be sprayed, then utilizes dry high-pressure air to purge clean process to the substrate surface after sandblasting;
Step (4): metal base is put into preheating oven and carry out warm-up operation, preheating temperature is 115 DEG C, warm up time 25min; Metallic substrate surface after preheat sprays rapidly the bond coating containing Mo that a layer thickness is 0.35mm, makes it be formed and forms rough coatings with metallic substrate surface;
Step (5): drying of ceramic powder step (1) obtained is sent in the powder feeder of thermal spray system, and wherein powder feeder powder feeding gas is argon gas, and gas flow is 70L/min;
Step (6): plasma spray coating process parameter is set, processing parameter is: the airshed of argon gas is 130L/min, and the airshed of nitrogen is 10L/min, and working current is 450A, and operating voltage is 120V; Regulate the angle of spray nozzle, the angle of spray stream shaft angle degree and substrate surface is made to keep 90 °, then the spray distance arranging manipulator control nozzle and metal base is 20cm, the translational speed of nozzle is 0.03m/s, start thermal spray system and mechanical manipulator, cover in metallic substrate surface spraying and once obtain ceramic coating afterwards;
Step (7): fill hole sealing agent at surface ceramii layer.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of application claims.
Claims (7)
1. for the ceramic coating of metal matrix thermospray, it is characterized in that: the composition of its raw material comprises by weight: flint clay: 15-22 part, kaolin: 13-20 part, quartz: 3-8 part, titanium oxide: 3-5 part, sodium oxide: 2-5 part, zinc oxide: 1-3 part, Zirconia aluminosilicate: 2-3 part, feldspar: 15-18 part, iron powder: 2-4 part, auxiliary agent: 5-7 part, single nickel salt: 1.5-2.5, rare earth: 1-2 part, zircon: 1-2 part, deionized water: 4-8 part;
The component of described rare earth is by mass percentage: erbium: 8.5-8.8%, lutetium: 3.4-3.6%, neodymium: 9.1-9.8%, promethium: 2.7-3.5%, samarium: 11.2-12.5%, dysprosium: 11.2-11.5%, and surplus is lanthanum and inevitable impurity;
The component of described auxiliary agent is counted by weight: aluminium sesquioxide: 18-27 part, hyaluronic acid sodium: 11-16 part, titanium dioxide: 5-7 part, silicon sol: 2-4 part, carboxymethyl cellulose: 4-9 part.
2., as claimed in claim 1 for the ceramic coating of metal matrix thermospray, it is characterized in that: the composition of its raw material comprises by weight: flint clay: 15 parts, kaolin: 13 parts, quartz: 3 parts, titanium oxide: 3 parts, sodium oxide: 2 parts, zinc oxide: 1 part, Zirconia aluminosilicate: 2 parts, feldspar: 15 parts, iron powder: 2 parts, auxiliary agent: 5 parts, single nickel salt: 1.5, rare earth: 1 part, zircon: 1 part, deionized water: 4 parts;
The component of described rare earth is by mass percentage: erbium: 8.5%, lutetium: 3.4%, neodymium: 9.1%, promethium: 2.7%, samarium: 11.2%, dysprosium: 11.2%, and surplus is lanthanum and inevitable impurity;
The component of described auxiliary agent is counted by weight: aluminium sesquioxide: 18 parts, hyaluronic acid sodium: 11 parts, titanium dioxide: 5 parts, silicon sol: 2 parts, carboxymethyl cellulose: 4 parts.
3., as claimed in claim 1 for the ceramic coating of metal matrix thermospray, it is characterized in that: the composition of its raw material comprises by weight: flint clay: 18 parts, kaolin: 16 parts, quartz: 5 parts, titanium oxide: 4 parts, sodium oxide: 3 parts, zinc oxide: 2 parts, Zirconia aluminosilicate: 3 parts, feldspar: 17 parts, iron powder: 3 parts, auxiliary agent: 6 parts, single nickel salt: 2, rare earth: 1 part, zircon: 2 parts, deionized water: 6 parts;
The component of described rare earth is by mass percentage: erbium: 8.6%, lutetium: 3.5%, neodymium: 9.4%, promethium: 3.2%, samarium: 11.8%, dysprosium: 11.3%, and surplus is lanthanum and inevitable impurity;
The component of described auxiliary agent is counted by weight: aluminium sesquioxide: 24 parts, hyaluronic acid sodium: 13 parts, titanium dioxide: 6 parts, silicon sol: 3 parts, carboxymethyl cellulose: 7 parts.
4., as claimed in claim 1 for the ceramic coating of metal matrix thermospray, it is characterized in that: the composition of its raw material comprises by weight: flint clay: 22 parts, kaolin: 20 parts, quartz: 8 parts, titanium oxide: 5 parts, sodium oxide: 5 parts, zinc oxide: 3 parts, Zirconia aluminosilicate: 3 parts, feldspar: 18 parts, iron powder: 4 parts, auxiliary agent: 7 parts, single nickel salt: 2.5, rare earth: 2 parts, zircon: 2 parts, deionized water: 8 parts;
The component of described rare earth is by mass percentage: erbium: 8.8%, lutetium: 3.6%, neodymium: 9.8%, promethium: 3.5%, samarium: 12.5%, dysprosium: 11.5%, and surplus is lanthanum and inevitable impurity;
The component of described auxiliary agent is counted by weight: aluminium sesquioxide: 27 parts, hyaluronic acid sodium: 16 parts, titanium dioxide: 7 parts, silicon sol: 4 parts, carboxymethyl cellulose: 9 parts.
5., for a spraying method for the ceramic coating of metal matrix thermospray, it is characterized in that comprising the following steps:
Step (1): take each raw material, adopts any one method of spray-drying process, sintering crushing method or mechanical attrition method to carry out fragmentation, makes spraying ceramic powder;
Step (2): carry out surface cleaning to metal base to be sprayed, removes greasy dirt and the rusty scale of metallic substrate surface by method that is chemical or physics;
Step (3): carry out blasted rough process to metal base to be sprayed, then utilizes dry high-pressure air to purge clean process to the substrate surface after sandblasting;
Step (4): metal base is put into preheating oven and carry out warm-up operation, preheating temperature is 90-115 DEG C, warm up time 20-45min; Metallic substrate surface after preheat sprays rapidly the bond coating that a layer thickness is 0.08-0.35mm, makes it be formed and forms rough coatings with metallic substrate surface;
Step (5): drying of ceramic powder step (1) obtained is sent in the powder feeder of thermal spray system, and wherein powder feeder powder feeding gas is argon gas, and gas flow is 45-70L/min;
Step (6): plasma spray coating process parameter is set, regulate the angle of spray nozzle, the angle of spray stream shaft angle degree and substrate surface is made to keep 60 °-90 °, then the spray distance arranging manipulator control nozzle and metal base is 8-20cm, the translational speed of nozzle is 0.01-0.03m/s, start thermal spray system and mechanical manipulator, cover in metallic substrate surface spraying and once obtain ceramic coating afterwards;
Step (7): fill hole sealing agent at surface ceramii layer.
6. the spraying method of the ceramic coating for metal matrix thermospray according to claim 5, it is characterized in that: the described plasma spray coating process parameter in step (5) is: the airshed of argon gas is 90-130L/min, the airshed of nitrogen is 5-30L/min, working current is 350-450A, and operating voltage is 120-150V.
7. the spraying method of the ceramic coating for metal matrix thermospray according to claim 5, is characterized in that: described bond coating is Mo, NiAl, NiCr or xantal one wherein.
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| CN105057678A (en) * | 2015-07-29 | 2015-11-18 | 安徽普源分离机械制造有限公司 | Metal nickel ceramic coating good in high-temperature-cracking-resistant peeling capacity and manufacturing method of metal nickel ceramic coating |
| CN105482611A (en) * | 2015-12-31 | 2016-04-13 | 李栋军 | Metal product antirust coating |
| CN109111243A (en) * | 2018-09-20 | 2019-01-01 | 界首永恩机电科技有限公司 | A kind of method that ceramics surface sprays complex copper powder |
| CN112427275A (en) * | 2020-11-12 | 2021-03-02 | 苏州东盛金属表面处理有限公司 | Uniform thermal spraying process for metal-based roller body |
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| CN109111243B (en) * | 2018-09-20 | 2020-12-11 | 界首永恩机电科技有限公司 | Method for spraying composite copper powder on surface of ceramic artwork |
| CN112427275A (en) * | 2020-11-12 | 2021-03-02 | 苏州东盛金属表面处理有限公司 | Uniform thermal spraying process for metal-based roller body |
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